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/* GDK - The GIMP Drawing Kit
* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
/*
* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
* file for a list of people on the GTK+ Team. See the ChangeLog
* files for a list of changes. These files are distributed with
* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
*/
#if defined(GTK_DISABLE_SINGLE_INCLUDES) && !defined (__GDK_H_INSIDE__) && !defined (GDK_COMPILATION)
#error "Only <gdk/gdk.h> can be included directly."
#endif
#ifndef __GDK_REGION_H__
#define __GDK_REGION_H__
#include <gdk/gdktypes.h>
G_BEGIN_DECLS
/* GC fill rule for polygons
* EvenOddRule
* WindingRule
*/
typedef enum
{
GDK_EVEN_ODD_RULE,
GDK_WINDING_RULE
} GdkFillRule;
/* Types of overlapping between a rectangle and a region
* GDK_OVERLAP_RECTANGLE_IN: rectangle is in region
* GDK_OVERLAP_RECTANGLE_OUT: rectangle in not in region
* GDK_OVERLAP_RECTANGLE_PART: rectangle in partially in region
*/
typedef enum
{
GDK_OVERLAP_RECTANGLE_IN,
GDK_OVERLAP_RECTANGLE_OUT,
GDK_OVERLAP_RECTANGLE_PART
} GdkOverlapType;
typedef void (* GdkSpanFunc) (GdkSpan *span,
gpointer data);
GdkRegion * gdk_region_new (void);
GdkRegion * gdk_region_polygon (const GdkPoint *points,
gint n_points,
GdkFillRule fill_rule);
GdkRegion * gdk_region_copy (const GdkRegion *region);
GdkRegion * gdk_region_rectangle (const GdkRectangle *rectangle);
void gdk_region_destroy (GdkRegion *region);
void gdk_region_get_clipbox (const GdkRegion *region,
GdkRectangle *rectangle);
void gdk_region_get_rectangles (const GdkRegion *region,
GdkRectangle **rectangles,
gint *n_rectangles);
gboolean gdk_region_empty (const GdkRegion *region);
gboolean gdk_region_equal (const GdkRegion *region1,
const GdkRegion *region2);
gboolean gdk_region_point_in (const GdkRegion *region,
int x,
int y);
GdkOverlapType gdk_region_rect_in (const GdkRegion *region,
const GdkRectangle *rectangle);
void gdk_region_offset (GdkRegion *region,
gint dx,
gint dy);
void gdk_region_shrink (GdkRegion *region,
gint dx,
gint dy);
void gdk_region_union_with_rect (GdkRegion *region,
const GdkRectangle *rect);
void gdk_region_intersect (GdkRegion *source1,
const GdkRegion *source2);
void gdk_region_union (GdkRegion *source1,
const GdkRegion *source2);
void gdk_region_subtract (GdkRegion *source1,
const GdkRegion *source2);
void gdk_region_xor (GdkRegion *source1,
const GdkRegion *source2);
void gdk_region_spans_intersect_foreach (GdkRegion *region,
const GdkSpan *spans,
int n_spans,
gboolean sorted,
GdkSpanFunc function,
gpointer data);
G_END_DECLS
#endif /* __GDK_REGION_H__ */
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